75507525 has 24 divisors (see below), whose sum is σ = 138711360. Its totient is φ = 40270320.

The previous prime is 75507479. The next prime is 75507529. The reversal of 75507525 is 52570557.

It is not a de Polignac number, because 75507525 - 2¹⁵ = 75474757 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 75507525.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75507529) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 55257 + ... + 56606.

It is an arithmetic number, because the mean of its divisors is an integer number (5779640).

Almost surely, 2^75507525 is an apocalyptic number.

75507525 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

75507525 is a deficient number, since it is larger than the sum of its proper divisors (63203835).

75507525 is a wasteful number, since it uses less digits than its factorization.

75507525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111882 (or 111871 counting only the distinct ones).

The product of its (nonzero) digits is 61250, while the sum is 36.

The square root of 75507525 is about 8689.5066027940. The cubic root of 75507525 is about 422.6654464494.

The spelling of 75507525 in words is "seventy-five million, five hundred seven thousand, five hundred twenty-five".